This Weeks Discoveries. 4/14/2019
Wenatchee Home Inspections

Another addition in a week of discovery.

As a Home Inspector, Structural Pest Inspector and Home Inspection Licensing Instructor I try to keep up with new products, manufacturer or trade information, code information or just interesting content that may help those who are in the profession or looking to further educate themselves.  The material may be articles, documents, video link,vendor sites, technical materials or even an interesting code questions.

Below is a list of some interesting items found in the last week.

Construction/Building Information-

Deck Footings Done Right
https://www.finehomebuilding.com/2013/05/16/deck-footings-done-right

Very good article from Glenn Mathewson on Emergency Escape and Rescue Openings.

I think everyone should read this.

https://www.finehomebuilding.com/2019/02/27/emergency-escape-and-rescue-openings

Flashing a cantilevered joist

https://www.finehomebuilding.com/2016/05/17/cantilevered-joist-flashing

Efflorescence-Stucco Manufacturers Association

http://www.stuccomfgassoc.com/industry/papers/efflo.pdf

Building Science Information-


What Happens When You Put a Plastic Vapor Barrier in Your Wall?

https://www.energyvanguard.com/blog/75130/What-Happens-When-You-Put-a-Plastic-Vapor-Barrier-in-Your-Wall


This is a very good video discussing indoor air quality for homes.

I was just discussing indoor air quality, mold on other factors on home chemistry with a builder just this morning. Then I happen upon this video.

Pay particular attention to what he states about moisture in the home. This is a topic I have stated many times.

https://youtu.be/OR08iSJN-G4

Building Codes/Technical Documents-


NAIMA (North American Insulation Manufacturers Association)- Installation & Application

https://insulationinstitute.org/tools-resources/resource-library/installation-application/

Electrical

Although this is a HVAC site this deals with some electrical terms of overload, short, and ground fault

https://hvacrschool.com/techs-confuse-overload-short-ground-fault/


NEC 2017 Code Changes in Wiring & Protection

Nice document with analysis of the ahanges

https://www.pdhexpress.com/pdhcourse/pdf/nec-2017-code-changes-in-wiring-and-protection.pdf


Here is a very good article on double pole GFCI's on MWBC and some issues with the testing.

Ground Fault Protection and the Multi-wire Branch Circuit: A Troubled Marriage

Randal P. Andress

http://www.ncwhomeinspections.com/system/files/userfiles/GFCI_on_MWBC_GFPofMWBC-20160815-RAndress.pdf

EC&M: 100 Years of Editorial Excellence- Electrical History

https://www.ecmweb.com/contractor/ecm-100-years-editorial-excellence

Plumbing/HVAC

CONDENSATE DRAINAGE IN A HIGH EFFICIENCY GAS FURNACE

https://hvacrschool.com/condensate-drainage-in-a-high-efficiency-gas-furnace/

Well this just shows you that logical conclusion may not be correct.

https://phys.org/news/2019-03-chore-air-conditioner-condenser-wont.html





CONDENSATE DRAIN CODES & BEST PRACTICES

https://hvacrschool.com/condensate-drain-codes-best-practices/?utm_source=TechTips&utm_campaign=c833fc7061-RSS_EMAIL_CAMPAIGN&utm_medium=email&utm_term=0_608fe06f1d-c833fc7061-64209185


HUMIDIFIER FACTS

https://hvacrschool.com/humidifier-facts/?utm_source=TechTips&utm_campaign=c833fc7061-RSS_EMAIL_CAMPAIGN&utm_medium=email&utm_term=0_608fe06f1d-c833fc7061-64209185


This is a great explanation on adiabatic cooling.

ADIABATIC COOLING, BLOWER SETTINGS AND WHY YOU CARE

https://hvacrschool.com/adiabatic-cooling-blower-settings-care/

Roofing-

http://prugarinc.com/shingles/shingle-damage-evaluation-characteristics-of-aging-part-4a/

http://prugarinc.com/shingles/shingle-damage-evaluation-characteristics-of-aging-part-4b/

http://prugarinc.com/shingles/shingle-damage-evaluation-characteristics-of-aging-part-4d/

http://prugarinc.com/shingles/shingle-damage-evaluation-characteristics-of-aging-part-4e/


Here is a cool reference for some older roofing tiles.

https://www.tileroofs.com/custom_manufactured_tile.php

AVERAGE FLAT ROOF MEMBRANE LIFE SPAN

https://roofslope.com/average-flat-roof-membrane-life-span/?fbclid=IwAR3vJmKWmMuI5tnWmTd4kuAf86dCGirzOZKLWaB1aVPrluW_aKvxhs6oOcA

Miscellaneous Information-

Six Classes is about the understanding of chemicals of concern and ways to avoid their use.
https://www.sixclasses.org/

"There are no secrets to success. It is the result of preparation, hard work, and learning from failure."

Colin Powell

If you find any errors or have additional information that would expand on any code, building standards or manufacturer requirements please let me know.

NCW Home Inspections, LLC  is a Licensed Washington State Home Inspection service located in Wenatchee Washington serving Chelan County, Douglas County, Kittitas County, Okanogan County and Grant County Washington and the cities of Wenatchee, Leavenworth, Cashmere, Oroville, Cle Elum, East Wenatchee, Quincy and many more…  

Your Wenatchee and Chelan Professional Real Estate, Home and Structural Pest Inspection Service

Instructor- Fundamentals of Home Inspection-  Bellingham Technical College

WA Home Inspector Advisory Licensing Board

www.ncwhomeinspections.com                                                   509-670-9572

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This Weeks Discoveries in Home Inspections